[tracker] tracker-needle: add logic to find by tags only

[Martyn James Russell <mr src gnome org>]

commit e476a71a6d58071fe61a6745d1ebdb6beced3e5d
Author: Adrien Dorsaz <adrien adorsaz ch>
Date:   Mon Feb 23 18:12:32 2015 +0100

    tracker-needle: add logic to find by tags only

 src/tracker-needle/tracker-needle.vala |   48 ++++++++++++++++++++++++++++++-
 1 files changed, 46 insertions(+), 2 deletions(-)
---
diff --git a/src/tracker-needle/tracker-needle.vala b/src/tracker-needle/tracker-needle.vala
index df72423..d2037b2 100644
--- a/src/tracker-needle/tracker-needle.vala
+++ b/src/tracker-needle/tracker-needle.vala
@@ -36,6 +36,7 @@ public class Tracker.Needle {
        private SeparatorToolItem separator_secondary;
        private ToggleToolButton find_in_contents;
        private ToggleToolButton find_in_titles;
+       private ToggleToolButton find_in_tags;
        private ToggleToolButton find_in_all;
        private ToolItem search_entry;
        private ComboBox search_list;
@@ -63,6 +64,7 @@ public class Tracker.Needle {
 
        private ResultStore categories_model;
        private ResultStore files_model;
+       private ResultStore files_in_tags_model;
        private ResultStore files_in_title_model;
        private ResultStore images_model;
        private ResultStore images_in_title_model;
@@ -171,6 +173,19 @@ public class Tracker.Needle {
                                                "nfo:fileLastModified(?urn)",
                                                "nie:url(?urn)");
 
+               files_in_tags_model = new ResultStore(7);
+               files_in_tags_model.limit = limit;
+               files_in_tags_model.result_overflow.connect (result_overflow);
+               files_in_tags_model.add_query (Tracker.Query.Type.ALL,
+                                      Tracker.Query.Match.TAGS_ONLY,
+                                      "?urn",
+                                      "nie:url(?urn)",
+                                      "tracker:coalesce(nie:title(?urn), nfo:fileName(?urn))",
+                                      "nie:url(?urn)",
+                                      "nfo:fileSize(?urn)",
+                                      "nfo:fileLastModified(?urn)",
+                                      "nie:url(?urn)");
+
                // Images model
                images_model = new ResultStore (6);
                images_model.limit = limit;
@@ -308,6 +323,11 @@ public class Tracker.Needle {
                find_in_titles.get_accessible().set_name("Find in Titles");
                find_in_titles.get_child().get_accessible().set_name("Find in Titles");
 
+               find_in_tags = builder.get_object ("toolbutton_find_in_tags") as ToggleToolButton;
+               find_in_tags.toggled.connect (find_in_toggled);
+               find_in_tags.get_accessible().set_name("Find in Tags");
+               find_in_tags.get_child().get_accessible().set_name("Find in Tags");
+
                find_in_all = builder.get_object ("toolbutton_find_in_all") as ToggleToolButton;
                find_in_all.toggled.connect (find_in_toggled);
                find_in_all.get_accessible().set_name("Find in All");
@@ -524,7 +544,11 @@ public class Tracker.Needle {
                        sw_filelist.show ();
                        current_view = sw_filelist;
 
-                       if (find_in_contents.active) {
+                       if (find_in_tags.active) {
+                               store = files_in_tags_model;
+                               store.search_tags = search_tags();
+                               debug("Tags to look for: %s", string.joinv("; ", store.search_tags.data));
+                       } else if (find_in_contents.active) {
                                store = files_model;
                        } else {
                                store = files_in_title_model;
@@ -537,7 +561,10 @@ public class Tracker.Needle {
 
                if (store != null) {
                        // We can set tags to search by but we don't anymore
-                       store.search_tags = null;
+                       // except if user want explecitly search by tags only.
+                       if (!find_in_tags.active) {
+                               store.search_tags = null;
+                       }
                        store.search_term = search.get_text ();
                }
 
@@ -575,6 +602,7 @@ public class Tracker.Needle {
                separator_secondary.visible = view_filelist.active || view_icons.active;
                find_in_contents.visible = view_filelist.active;
                find_in_titles.visible = view_filelist.active || view_icons.active;
+               find_in_tags.visible = view_filelist.active;
                find_in_all.visible = view_icons.active; // only show this in one view
 
                search_run ();
@@ -584,6 +612,7 @@ public class Tracker.Needle {
        private void find_in_toggled () {
                if (!find_in_contents.active &&
                    !find_in_titles.active &&
+                   !find_in_tags.active &&
                    !find_in_all.active) {
                    return;
                }
@@ -596,6 +625,11 @@ public class Tracker.Needle {
                        }
 
                        search_run ();
+               } else if (find_in_tags.active){
+                       debug ("Find in toggled to 'tags'");
+
+                       search_entry.sensitive = true;
+                       search_run();
                } else if (find_in_titles.active) {
                        debug ("Find in toggled to 'titles'");
 
@@ -716,6 +750,16 @@ public class Tracker.Needle {
        private void info_bar_closed (Button source) {
                info_bar.hide ();
        }
+
+       private GLib.GenericArray<string> search_tags(){
+               GLib.GenericArray<string> tagArray = new GLib.GenericArray<string>();
+
+               foreach (string tag in search.get_text ().split(",")){
+                       tagArray.add(tag) ;
+               }
+
+               return tagArray;
+       }
 }
 
 static bool print_version = false;